Vacuum cleaner



Nov. 21, 1939. R, PMORTENSEN 2,180,930

VACUUM CLEANER Filed Jan. lO, 1938 VH1/111141111 i /x limlllWMM1111111111111MMMMMM'" IWW/1117111111111" mmaafgd/@Wnm F3 M 6% lATTORNEY Patented Nov. 21, 1939 VACUUM CLEANER Rasmus PederMox-tensen,Copenhagen, Denmark, assignor to Electrolux Corporation, Dover, Del., acorporation of Delaware Application January 10, 1938, Serial No. 184,195

In Germany January 11, 1937 5 Claims.

My invention relates to a vacuum cleaner and more particularly to animproved cleaning device for use in connection therewith.

In accordance with my invention one or more brush members are movablymounted within the mouth of a nozzle member and so arranged as to bemoved relative to the nozzle body when the nozzle as a whole is movedback and forth over a surface to be cleaned.

Further objects and advantages of my invention will be apparent from thefollowing description considered in connection with the accompanyingdrawing which forms part of this specification, and of which- Fig. 1 isa bottom view of a nozzle in accordance with my invention;

Fig. 2 is a cross-sectional view taken on the line 2 2 of Fig. 1; and

Fig. 3 is a cross-sectional view taken on the line 3-3 of Fig. l.

Referring to the drawing, reference character I designates a nozzlebody, which may be made of wood or metal, and which is provided with anoutlet II to which is secured a suction conduit connecting member I2adapted to be connected to a suction conduit I3. If desired, a rubberAbumper I4 may be disposed around the edge of body I0 in order to serveas a protection against marring furniture or the like.

Member I0 is opened at the bottom and has a hollow interior l5 of theshape illustrated in Fig. 1, that is, comparatively wide in the middleand tapered towards each end. Pivotally mounted within space I5 are apair of brush members IB and I l, each of which carries brush bristles23. Members I6 and Il include rigid backs and may be pivoted to the bodyin any desired manner, as by the studs I8. The free ends of members I6and Il are formed with cut-away recesses I9 and 20, respectively, 'thuspermitting overlap' ping of the ends of the members in all pivotalpositions.

In operation," the suction conduit I3 is con-` nected to a suitablevacuum cleaner unit provided with a'source of suction and a dust sepa-4rating member.4v When the ynozzle is moved over a surface to becleaned, the `bristles 23 carried by brush members I6 and I1, contactthe surface and offer a certain amount of frictional resistance tomovement thereover. Consequently, when the nozzle is moved in a forwarddirection, .this frictional resistance causes the brush members to bepivoted to the rear of the nozzle, as shown in dotted-lines in Fig. 1.Movement of the nozzle in the opposite direction causes the brushbristles to be pivoted to the forward part of the nozzle, as shown infull lines in Fig. 1. Thus, the brushes are always adjacent to thetrailing edge of the nozzle and in a position to dislodge dirt whichsuction alone has been unable to pick up.

It will be noted that in either of the' above extreme positions of thebrushes, the outlet open.- ing Il is unobstructed so that air may owfree thereinto. the brushes is shifted, they pass directly under theoutlet opening II, and across the center line of the nozzle where thesuction is the greatest and Moreover, each time the position of thus areeifectively cleaned by the inrushlng air.

While I have shown one more or less specific embodiment of my invention,it is to be understood that this has been done for purposes ofillustration only, and that the scope of the invention is not to belimited thereby, but is to be determined by the appended claims viewedin the light of the prior art. I

What I claim is:

1. In a suction nozzle for cleaning a surface, a hollow body formed witha suction intake opening,'a brush member including a rigid back carryingbrush bristles, and means pivotally mounting said brush member about anaxis at right angles to the plane of said opening and within said hollowbody with said bristles projecting through said opening, said pivotalmeans being located closer to one end of said brush member than to theother, whereby said brush member is pivoted within said body about Vsaidaxis as the nozzle is moved back and forth over the surface.

2. In a suction nozzle for cleaning .a surface, a hollow body formedwith an elongated suction intake opening, a pair of brush members eachin. cluding a rigid back carrying brush bristles, and means forpivotally mounting said members about axes at right angles to the planeof said opening and within said hollow body with said bristlesprojecting through said opening, one of said pivotal means being locatedadjacent to one end of each brush member and adjacent to the oppositeends of said elongated opening, whereby said brush members are pivotedwithin said body about said axes as the nozzle is moved back and forthover the surface.

3. In a suction nozzle for cleaning a surface, a hollow body formed withan elongated suction intake opening, narrow at the ends and wider at thecenter, a pair of brush members each including a rigid back supportingbrush bristles, and means for pivotally mounting said members about axesat right angles to the plane of said opening and within said hollow bodywith said bristles projecting through said opening, one of said pivotalmeans being located adjacent to one end of each brush member andadjacent to the narrow ends of said elongated opening, the free ends ofsaid brush members being disposed in said wider central portion of saidopening, whereby said brush members are pivoted within said body aboutsaid axes as the nozzle is moved back and forth over the surface.

4. In a suction nozzle for cleaning a surface, a hollow body formed withan elongated suction intake opening, a pair of brush members eachincluding a rigid back carrying brush bristles, and

means for pivotally mounting said members about` axes at right angles tothe plane of said openingv and within said hollow body with saidbristles projecting through said opening, one of said pivotal meansbeing located adjacent toV one end of each brush member and adjacent tothe opposite ends of said elongated opening, whereby saidbrush membersare pivoted Within said body about said axes as the nozzle is moved backand forth over the surface, the free ends of said brush members beingoppositely recessed so as to overlap in all pivotal positions thereof.

5. In a suction nozzle for cleaning a surface, a hollow body formed witha suction intake opening on one side and a suction outlet opening on anopposite side, a brush member including a rigid back carrying brushbristles, and means for pivotally mounting said brush member about anaxis at right angles to the plane of said opening and within said hollowbody between said openings with said bristles projecting through saidintake opening, said pivotal means being located closer to one end ofsaid brush memberthan to the other, whereby said brush member is pivotedwithin said body about said` axis as the nozzle is moved back and forthover the surface.

RASMUS PEDER MORTENSEN.

